record overnight temp for melbourne, page-27

Quite a lot actually, it's about credibility
Some think it's about 5,000,000,000 years old while others think it's more like 5,000 years old.
It's a simple question and you ask a lot of them.
I think it's the 5 billion year figure.

If you subscribe to the more recent time it means your data for climate change is also limited to that very short time line.